SQL Injection Payload Impact: UNION vs DROP TABLE
You're the security manager for a tech company that uses a database to store sensitive customer data. You have implemented countermeasures against SQL injection attacks. Recently, you noticed some suspicious activities and suspect an attacker is using SQL injection techniques. The attacker is believed to use different forms of payloads in his SQL queries. In the case of a successful SQL injection attack, which of the following payloads would have the most significant impact?
Community Votes
75% of anonymous learners picked answer D. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
The core concept is assessing attack impact; the trap is prioritizing stealthy data theft over immediate catastrophic destruction.
This question evaluates the severity of different SQL injection payloads, contrasting data exfiltration with destructive commands. The correct answer identifies the payload causing permanent data loss as having the most significant impact.
Candidates often select Option A (UNION SELECT) because it represents a common method for data exfiltration, failing to recognize that destructive actions like DROP TABLE have a higher severity rating due to data loss.
Community Discussion (3 comments)
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Expert Analysis
Why the Answer Is Correct
Option D is the correct answer because it combines authentication bypass with a destructive command (DROP TABLE). In security impact assessments, the availability and integrity of data are critical; deleting an entire table causes irreversible damage, which is more severe than merely viewing unauthorized records. As NikoTomas noted, "DROP table... deletes entire database," highlighting the permanence of this action.Why the Other Options Are Wrong
Option A uses UNION SELECT to extract data, which compromises confidentiality but does not destroy data. Option B attempts pattern matching but is less impactful than full extraction. Option C allows viewing unauthorized data via logical bypass, again affecting confidentiality without integrity loss. None of these options cause the permanent system degradation seen in Option D.Community Comment Notes
The community consensus strongly favors Option D. Killwitch explained that Option D is the most destructive because it results in "permanent data loss by deleting an entire database table." This aligns with exam logic where 'most significant impact' implies the highest level of harm, typically defined by data loss or system compromise rather than just information disclosure.Exam Strategy
When asked about 'significant impact' or 'severity,' prioritize Integrity and Availability impacts (data loss, system crash) over Confidentiality impacts (data theft). Always look for destructive keywords like DROP, DELETE, or TRUNCATE when evaluating SQL injection outcomes.
Frequently Asked Questions
Why isn't UNION SELECT the most significant?
UNION SELECT only extracts data (Confidentiality), whereas DROP TABLE destroys data (Integrity/Availability). Destruction is considered a higher impact.
What defines 'significant impact' in CEH exams?
It usually refers to the worst-case scenario outcome, such as total data loss, system takeover, or denial of service, rather than just information gathering.